Understanding the Key Parts of a Backflow Preventer
If you've ever found yourself staring at that strange, metallic assembly of pipes near your water meter or in your yard, you've probably wondered about the different parts of a backflow preventer and what they actually do for your home. It's one of those devices that most people don't think about until a plumber mentions it or the city sends a notice saying it needs its annual "physical." At its simplest, this device is a gatekeeper. It ensures that the water flowing into your house stays clean by preventing "backflow"—which is exactly what it sounds like: dirty water from irrigation systems, pools, or fire lines trying to suck back into the main clean water supply. ...